Pump



J. T. HAYDEN sept'. 2s, 1937.

PUMP

Filed Aug. 5, 1935 Patented Sept. 28, 1937 UNITED STATES PATENT OFFICE 1Claim.

This invention relates to` pumps lifting fluid from wells either deep orshallow wells, and works on both up and down strokes. The inventionconsists of novel features and parts and combinations of the same aswill be described hereinafter and then pointed out in the claim.

A practical embodiment of the invention is represented in theaccompanying drawing, forming a part of this specification, in whichcharacters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of the improvement. Figure 2 is alongitudinal section of the inlet valves shown in Figure l. Figure 3 isa plan view of the valve cage shown in Figure 1. Figure 4 is ahorizontal section of the valve cage.

The improved pump has upper and lower tubing sections I and 2,respectively, connected together by a center coupling ring 3. The centercoupling ring (3) is provided with a tapered seat (il). A longitudinaloutlet passage (5i) provides fluid connection between saidtubing-sections I and Z-and a lateral inlet passage (6) allows fluidcommunication between the well fluid outside the ring (3) and anintermediate portion of the tapered seat (4). A lower barrel (l) isattached to center ring (3) below said tapered seat (Il) and extends andopens into said lower tubing section (Il). An upper working barrel (8)is attached to said ring (3) above said tapered seat (4) and extends andopens intol said upper tubing section (I). An axially bored taperedvalve cage (9) is fitted into said tapered seat (il) and is providedwith upper and lower inlet valve ports (Ill), communicating with saidlateral inlet passage (6) and with the respective working barrels. Aspool shaped inlet valve member (II) is slidably arranged in the bore ofsaid cage and adapted to alternately close said Valve ports. A lowertraveling valve (I2) is positioned in said lower barrel to permitdownward ow only of fluid therethrough. An upper traveling valve (I3) ispositioned in said upper working barrel to permit upward ow only of uidtherethrough. A connecting rod (I4) for said traveling valves passesthrough said spool shaped inlet valve member and a sucker rod (Illa) issecured to the upper traveling valve to reciprocate said travelingvalves. Spiders (I5 and I6) attached to the bottom and top of theworking barrels are fitted tothe inside of the casing to (Cl. IOS- 185)prevent vibration of working barrels. The lower end of the lower workingbarrel is tted with a check valve (Il), seating on a suitableI valveseat on spider E5. This valve does not have anything to do with theworking of pump but is provided 5 to prevent loss of liuid in the columnin case either the cups or the valve in the lower traveling valvebecomes badly worn as the spool shaped sliding valve can only close oneset of ports Ill, which will invariably be the top set.

Thus, from the foregoing, it can be seen tha a very simple and electivedouble stroke pump is provided which works equally well in deep orShallow wells and is composed of few parts and by having the taperedvalve seat cage, can be rodded and repaired without disturbing thetubing in the well. Various changes may be made in the manufacture ofthis pump without departing from the principle thereof. Hence, Iconsider myself entitled to all such variations as 2o come Within thescope of the claim. Having thus fully described my invention, I claim asnew and desire to secure by Letters Patent:

In a well pump, an upper and a lower tubing section; a coupling ringjoining adjacent ends of said tubing sections and provid-ed with acentral tapered seat, a longitudinal outlet passage establishing uidcommunication between said tubing sections and a lateral inlet passageestablishing fluid communications between the well uid outside the ringand an intermediate portion of the tapered seat; a lower working barrelattached to said ring below said tapered seat and extending and openinginto said lower tubing section; an upper working barrel attached to saidring, above said seat and extending and opening into said upper tubingsection; an axially bored tapered valve cage iitted in said tapered seatand provided with upper and lower inlet valve ports communicating withsaid lateral inlet passage to respective working barrels; a spool-shapedinlet valve member slidably arranged in the bore of said cage andadapted to alternately close said Valve ports; a lower traveling valvearranged in said lower barrel to permit downward ow only of fluidtherethrough; an upper traveling valve arranged in said upper barrel topermit upward ow only of fluid therethrough; a connecting rod for saidtraveling valves passing through said spool shaped inlet valve memberand means for reciprocating said traveling valves.

JOHN T. HAYDEN.

